NOTE: if you remove the 6 bolts on the flywheel like i did either restake them or locktight them when you put them back in. you can do this exactly like I did without removing those bolts.. just use the puller and leave the small bolts. But this is how I changed my 1975 mercury outboard 150HP L6 tower of power timing belt distributor belt. I'm not a professional and this isn't the correct procedure but it worked for me. thanks for watching.